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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact 052369e09b332eae39f000514d6d781f6e2db4ab:


# Copyright (c) 1999, 2000 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA  02111-1307, USA.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing aggregate functions and the
# GROUP BY and HAVING clauses of SELECT statements.
#
# $Id: select5.test,v 1.1 2000/06/08 11:13:02 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Build some test data
#
set fd [open data1.txt w]
for {set i 1} {$i<32} {incr i} {
  for {set j 0} {pow(2,$j)<$i} {incr j} {}
  puts $fd "[expr {32-$i}]\t[expr {10-$j}]"
}
close $fd
execsql {
  CREATE TABLE t1(x int, y int);
  COPY t1 FROM 'data1.txt'
}
file delete data1.txt

do_test select5-1.0 {
  execsql {SELECT DISTINCT y FROM t1 ORDER BY y}
} {5 6 7 8 9 10}

# Sort by an aggregate function.
#
do_test select5-1.1 {
  execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY y}
} {5 15 6 8 7 4 8 2 9 1 10 1}
do_test select5-1.2 {
  execsql {SELECT y, count(*) FROM t1 GROUP BY y ORDER BY count(*), y}
} {9 1 10 1 8 2 7 4 6 8 5 15}

finish_test